List of Famous people with last name Say

Fazıl Say is a Turkish pianist and composer.

Jean-Baptiste Say was a liberal French economist and businessman who argued in favor of competition, free trade and lifting restraints on business. He is best known for Say's law—also known as the law of markets—which he popularized. Scholars disagree on the surprisingly subtle question of whether it was Say who first stated what is now called Say's law. Moreover, he was one of the first economists to study entrepreneurship and conceptualized entrepreneurs as organizers and leaders of the economy.

Louis Auguste Say was a French businessman and economist. He founded large sugar refineries in Nantes and Paris, and the sugar company "Say", known after 1972 as Béghin-Say; as of 2002 it is a subsidiary of Tereos.

Marie Say (1857–1943) was a French heiress and socialite.

Jean-Baptiste-Léon Say was a French statesman and diplomat.